污染物质

The utility model has the advantages that the operation process of medicine adding is simplified because the three-way switch is capable of randomly changing the injection direction of medicine liquid; the filter is capable of filtering the insoluble substances in the medicine liquid; the tapered needle head of side port avoids the phenomena of pollution of the medicine liquid and clog of the needle head owning to peeling off of rubber crumb on a rubber plug resulting from cut of a traditional needle head with an inclined plane.

本实用新型由于三通开关可随意改变药液的注入方向，使加药的操作过程更简化，过滤器可起到将药液中的不溶性物质滤除的作用，锥形侧孔针头则避免了因传统的斜面针头的切割作用导致胶塞上的橡皮屑脱落污染药液和阻塞针头的现象。

Large flower Huilan, the moth orchid, pineapple, Hong Zhang is the Spring Festival Fair play a key role in recent years in the new varieties, Lihuide professor said that the first two are Orchids, fragrance very short itself will not release toxic substances, but where athletes have gone, plant material will be contaminated.

大花惠兰、蝴蝶兰、凤梨、红掌是近年在春节花市唱主角的新品种，李惠德教授说，前两种是洋兰，香味很淡，本身也不会释放有毒物质，而且是大棚里无土裁培的，植料不会有污染。

And LED is free of infrared ray and ultraviolet radiation pollution.

LED采用的发光材料氮化镓本身不含汞、铅等有害物质，无红外线和紫外线污染

The principle manufacturing techniques of chemical slow-release formulation of pesticides,and the factors to affect active agent release were reviewed.

介绍了控制释放技术及其在农药生产中的应用，论述了农药控制释放剂型在减轻环境污染、减少农药使用量以及提高农药施用安全性的作用，并详细论述了化学型农药缓释剂的原理、制备技术和活性物质释放的影响因素。

The omega-3 fatty acids in big, deep-ocean fish are good for the heart, but the flesh of fish at the top of the pelagic food chain also tends to be laced with pollutants. Chief among them: mercury, which can increase the risk of heart disease.

内。深海鱼所含有的Omega-3脂肪酸对心脏有益，但位於食物链最高层的鲜鱼肉也容易含有污染性物质，其中最主要的是水银，而水银会增加会罹患心血管疾病的危险。

Attention has been paid greatly to the research on mesoscale circulations of atmosphere and pollutant transport i...

近年来随着沿岸经济的快速增长和污染问题的日益加剧，对沿岸区域大气中尺度环流及大气物质输运的的研究越来越受到重视。

Alcohol-based skin disinfectants could be used if there is no obvious organic material contamination.

含酒精的皮肤消毒剂可以在无明显有机物质污染时使用。

NO_X is one reason of acid rain, greenhouse effect, photochemical fog and breakage of ozonosphere, which is produced by combustion. It has become the global problem of air pollution.

燃烧过程的氮氧化物气体是引起酸雨、温室效应、导致光化学烟雾和破坏臭氧层的主要物质之一，已成为全球性面临的空气污染难题。

Evaluation results show that heavy metals of su***ce sediments in Arctic Chukchi Sea and the Bering Sea have not been artificially contaminated, remain within the scope of natural change.

重金属评价结果表明，整体上北极楚科奇海与白令海表层沉积物中重金属没有受到人为物质的污染，仍然处于自然变动范围之内。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。